The BE Meyers 249 Series Flash Hider fits most AR-15, M4, and M249 style weapons and is lightweight at only 3.5 oz! BE Meyers flash hiders virtually eliminate muzzle flash, preserving night vision while firing, preventing enemy detection of friendly positions and is easy and quick to install.In an independent study conducted by JSOC, the BE Meyers Flash Hider rose above the competition as a top performer, and has been the choice of elite military units for nearly two decades!Pin the 249F on our 13.7" and 14.0" barrels to achieve a legal length.Material: Stainless SteelFinish: MeloniteCaliber: 5.56 and .223Thread: 1/2"x28 RHWeight: 3.5... More